Read the blogs!
Ya, it is possible, but you need to have some good knowledge of CSS / html and ofcourse SMF theme to do it, also you can download any theme with sidebar and learning from it, you can add sidebar in your forum theme. Check out this theme I created, it has sidebar , from its code you can learn how to add it.
Have you looked at the ad management mod?
johnpaul2k2, there are other portals you could look at, such as TinyPortal, that was made by the legend that is Bloc and is now updated by IchBin one of the SMF Developers.
Page created in 0.155 seconds with 15 queries.Page served
by: 10.0.100.134 (10.0.100.113)